* ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * IDA AL102015 09/25/15 12 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 25 25 25 25 26 29 33 35 37 37 38 40 43 45 46 48 51 V (KT) LAND 25 25 25 25 26 29 33 35 37 37 38 40 43 45 46 48 51 V (KT) LGEM 25 23 22 22 21 21 22 24 25 27 28 N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP N/A N/A N/A N/A N/A N/A SHEAR (KT) 21 18 22 24 19 16 13 20 10 14 18 N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) -3 -2 -2 -2 -3 -3 -1 0 2 3 4 N/A N/A N/A N/A N/A N/A SHEAR DIR 285 271 265 276 279 250 242 235 254 252 285 N/A N/A N/A N/A N/A N/A SST (C) 27.7 27.8 27.8 27.8 27.8 27.9 28.0 28.0 28.3 29.1 29.6 N/A N/A N/A N/A N/A N/A POT. INT. (KT) 130 132 132 132 132 133 134 135 140 152 161 N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 114 116 116 116 116 114 115 117 124 136 145 N/A N/A N/A N/A N/A N/A 200 MB T (C) -54.2 -54.3 -54.4 -54.6 -54.8 -54.8 -55.1 -55.2 -55.6 -55.5 -55.6 N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.4 0.3 0.2 0.1 0.1 0.1 0.3 0.2 -0.1 0.1 0.0 N/A N/A N/A N/A N/A N/A TH_E DEV (C) 8 9 9 9 9 11 10 9 8 9 9 N/A N/A N/A N/A N/A N/A 700-500 MB RH 43 42 42 43 41 37 40 40 41 40 39 N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 14 13 12 11 10 9 8 9 8 7 6 LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 38 37 34 22 11 0 19 26 19 15 14 N/A N/A N/A N/A N/A N/A 200 MB DIV -2 0 -4 1 0 0 5 12 9 -20 -18 N/A N/A N/A N/A N/A N/A 700-850 TADV 2 1 1 2 0 0 -1 -2 -7 -4 -4 N/A N/A N/A N/A N/A N/A LAND (KM) 2044 2074 2105 2118 2103 2047 1983 1882 1749 1570 1397 N/A N/A N/A N/A N/A N/A LAT (DEG N) 21.9 22.4 22.8 23.3 23.8 24.6 24.7 24.3 23.8 23.4 22.9 N/A N/A N/A N/A N/A N/A LONG(DEG W) 45.0 45.3 45.6 45.9 46.3 47.1 47.8 48.7 49.9 51.6 53.2 N/A N/A N/A N/A N/A N/A STM SPEED (KT) 4 5 5 6 6 4 4 5 7 8 8 N/A N/A N/A N/A N/A N/A HEAT CONTENT 21 23 24 24 23 25 26 21 22 32 39 N/A N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT): 0/ 3 CX,CY: 0/ 3 T-12 MAX WIND: 30 PRESSURE OF STEERING LEVEL (MB): 618 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 11.9 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 14.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.0 INDIVIDUAL CONTRIBUTIONS TO INTENSITY CHANGE 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 ------------------------------------------------------------------------------ SAMPLE MEAN CHANGE 1. 2. 3. 4. 6. 8. 9. 10. 11. 12. 12. 13. 14. 15. 15. 16. SST POTENTIAL 0. 0. 1. 1. 4. 8. 13. 18. 22. 26. 28. 30. 32. 32. 32. 31. VERTICAL SHEAR MAG 1. 2. 3. 4. 5. 4. 2. 0. -2. -4. -6. -7. -9. -10. -10. -10. VERTICAL SHEAR ADJ 0. 1. 1. 1. 2. 3. 3. 3. 2. 2. 1. 1. 1. 1. 1. 1. VERTICAL SHEAR DIR -0. -0. -0. -0. -1. -1. -1. -1. -2. -2. -2. -2. -3. -3. -3. -3. PERSISTENCE -1. -2. -2. -2. -1. -1. -1. -1. -0. -0. 0. 0. -0. -1. -2. -2. 200/250 MB TEMP. 0. 0. -0. 0. 0. 1. 1. 1. 1. 1. 2. 2. 3. 4. 5. 6. THETA_E EXCESS 0. 0. 0. 0. 1. 1. 1. 0. 0. 0. 0. 0. -0. -0. -0. -0. 700-500 MB RH 0. 0. 1. 1. 2. 2. 3. 4. 4. 5. 5. 5. 5. 6. 6. 5. MODEL VTX TENDENCY -0. -1. -2. -3. -6. -8. -9. -11. -14. -16. -17. -17. -17. -17. -17. -17. 850 MB ENV VORTICITY 0. 0. 0. 0. -0. -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. 200 MB DIVERGENCE -0. -0. -1. -1. -1. -1. -2. -2. -2. -1. -0. 0. 1. 1. 2. 3. 850-700 T ADVEC 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. ZONAL STORM MOTION 0. 0. -0. -0. -0. -0. -1. -1. -1. -2. -2. -3. -3. -3. -3. -3. STEERING LEVEL PRES 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. DAYS FROM CLIM. PEAK 0. -0. -0. -0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -0. -0. -0. GOES PREDICTORS -1. -1. -1. -1. -2. -3. -5. -6. -7. -6. -6. -7. -7. -6. -6. -4. OCEAN HEAT CONTENT 0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. RI POTENTIAL -0. -1. -2. -3. -4. -4. -3. -2. -0. 1. 2. 3. 3. 4. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE -0. -0. 0. 1. 4. 8. 10. 12. 12. 13. 15. 18. 20. 21. 23. 26. CURRENT MAX WIND (KT): 25. LAT, LON: 21.9 45.0 ** 2022 ATLANTIC RI INDEX AL102015 IDA 09/25/15 12 UTC ** (SHIPS-RII PREDICTOR TABLE for 30 KT OR MORE MAXIMUM WIND INCREASE IN NEXT 24-h) Predictor Value RI Predictor Range Scaled Value(0-1) % Contribution 12 HR PERSISTENCE (KT) : -5.0 -45.0 to 30.0 0.53 2.5 850-200 MB SHEAR (KT) : 20.8 25.9 to 2.2 0.21 0.5 HEAT CONTENT (KJ/CM2) : 23.0 0.0 to 147.0 0.16 0.3 STD DEV OF IR BR TEMP : 11.9 33.3 to 3.1 0.71 1.2 MAXIMUM WIND (KT) : 25.0 25.0 to 125.0 0.00 0.0 2nd PC OF IR BR TEMP : 1.0 2.6 to -2.7 0.30 0.3 BL DRY-AIR FLUX (W/M2) : 198.4 814.0 to -65.0 0.70 0.9 POT = MPI-VMAX (KT) : 90.8 30.0 to 128.0 0.62 0.4 D200 (10**7s-1) : -1.0 -28.0 to 171.0 0.14 0.1 %area of TPW <45 mm upshear : 77.7 95.0 to 0.0 0.18 0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 4% is 0.8 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 9% is 0.8 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 6% is 0.9 times climatological mean ( 6.8%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 2.4%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 0% is 0.0 times climatological mean ( 4.6%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 0% is 0.0 times climatological mean ( 4.7%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 0% is 0.0 times climatological mean ( 5.3%) Matrix of RI probabilities ------------------------------------------------------------------------------ RI (kt / h) | 20/12 | 25/24 | 30/24 | 35/24 | 40/24 | 45/36 | 55/48 |65/72 ------------------------------------------------------------------------------ SHIPS-RII: 3.8% 9.0% 6.2% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 1.0% 2.1% 1.4% 0.9% 0.1% 2.2% 2.4% 5.0% Bayesian: 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 1.6% 3.7% 2.6% 0.3% 0.0% 0.7% 0.8% 1.7% ## ANNULAR HURRICANE INDEX (AHI) AL102015 IDA 09/25/15 12 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=5 NFAIL=2 ## ## AHI= 0 (AHI OF 100 IS BEST FIT TO ANN. STRUC., 1 IS MARGINAL, 0 IS NOT ANNULAR) ## ** PROBLTY OF AT LEAST 1 SCNDRY EYEWL FORMTN EVENT AL102015 IDA 09/25/2015 12 UTC ** TIME(HR) 0-12 12-24(0-24) 24-36(0-36) 36-48(0-48) CLIMO(%) 0 0( 0) 0( 0) 0( 0) <-- PROB BASED ON INTENSITY ONLY PROB(%) 0 0( 0) 0( 0) 0( 0) <-- FULL MODEL PROB (RAN NORMALLY) ** DSHIPS INTENSITY FORECAST ADJUSTED RELATIVE TO ONSET OF ERC WEAKENING PHASE ** TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 >24HR AGO (DSHIPS) 25 25 25 25 26 29 33 35 37 37 38 40 43 45 46 48 51 18HR AGO 25 24 24 24 25 28 32 34 36 36 37 39 42 44 45 47 50 12HR AGO 25 22 21 21 22 25 29 31 33 33 34 36 39 41 42 44 47 6HR AGO 25 19 16 15 16 19 23 25 27 27 28 30 33 35 36 38 41 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT